Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates

Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the e...

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Detalhes bibliográficos
Autores: Gil Serna, Jessica, Patiño Álvarez, Aurora Belén, Cortes, Laura, González Jaén, María Teresa, Vázquez Estévez, María Covadonga Inmaculada
Formato: artículo
Fecha de publicación:2014
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/34884
Acesso em linha:https://hdl.handle.net/20.500.14352/34884
Access Level:acceso abierto
Palavra-chave:582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
id ES_d8b7025e986772427ebe49a3cbb2dbbe
oai_identifier_str oai:docta.ucm.es:20.500.14352/34884
network_acronym_str ES
network_name_str España
spelling Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates Gil Serna, Jessica Patiño Álvarez, Aurora Belén Cortes, Laura González Jaén, María Teresa Vázquez Estévez, María Covadonga Inmaculada 582.28 579.67 Aspergillus steynii Aspergillus westerdijkiae Ecophysiological factors Ochratoxin A Microbiología (Biología) 2414 Microbiología Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the effect of temperature (20, 24 and 28ºC) and water activity (aw) (0.928, 0.964 and 0.995) on rowth, sporulation and OTA production by these fungi was examined in CYA and media prepared from paprika, green coffee, anise, grapes, maize and barley. Growth was positively affected by the highest temperature and aw values indicating that both species might be expected in warm climates or storage conditions. However, optimal growth conditions showed differences depending on the medium. OTA production was markedly affected by substrate and showed qualitative and quantitative differences. Both species, especially A. steynii, represent a great potential risk of OTA contamination due to their high production in a variety of conditions and substrates, in particular in barley and paprika-based media. Additionally, neither growth nor sporulation did result good indicators of OTA production by A. steynii or A. westerdijkiae;therefore, specific and highly-sensitive detection methods become essential tools for control strategies to reduce OTA risk by these species. Elsevier https://hdl.handle.net/20.500.14352/34884
title Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
spellingShingle Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
Gil Serna, Jessica
582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
title_short Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_full Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_fullStr Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_full_unstemmed Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
title_sort Aspergillus steynii and Aspergillus westerdijkiae as potential risk of OTA contamination in food products in warm climates
author Gil Serna, Jessica
author_facet Gil Serna, Jessica
Patiño Álvarez, Aurora Belén
Cortes, Laura
González Jaén, María Teresa
Vázquez Estévez, María Covadonga Inmaculada
author_role author
author2 Patiño Álvarez, Aurora Belén
Cortes, Laura
González Jaén, María Teresa
Vázquez Estévez, María Covadonga Inmaculada
author2_role author
author
author
author
topic 582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
topic_facet 582.28
579.67
Aspergillus steynii
Aspergillus westerdijkiae
Ecophysiological factors Ochratoxin A
Microbiología (Biología)
2414 Microbiología
description Aspergillus steynii and Aspergillus westerdijkiae are the main ochratoxin A (OTA) producing species of Aspergillus section Circumdati. Due to its recent description, few data are available about the influence of cophysiological factors on their growth and OTA production profiles. In this work, the effect of temperature (20, 24 and 28ºC) and water activity (aw) (0.928, 0.964 and 0.995) on rowth, sporulation and OTA production by these fungi was examined in CYA and media prepared from paprika, green coffee, anise, grapes, maize and barley. Growth was positively affected by the highest temperature and aw values indicating that both species might be expected in warm climates or storage conditions. However, optimal growth conditions showed differences depending on the medium. OTA production was markedly affected by substrate and showed qualitative and quantitative differences. Both species, especially A. steynii, represent a great potential risk of OTA contamination due to their high production in a variety of conditions and substrates, in particular in barley and paprika-based media. Additionally, neither growth nor sporulation did result good indicators of OTA production by A. steynii or A. westerdijkiae;therefore, specific and highly-sensitive detection methods become essential tools for control strategies to reduce OTA risk by these species.
publishDate 2014
format article
url https://hdl.handle.net/20.500.14352/34884
language eng
eu_rights_str_mv openAccess
publisher Elsevier
institution Universidad Complutense de Madrid (UCM)
collection Docta Complutense
reponame_str Docta Complutense
instname_str Universidad Complutense de Madrid (UCM)
_version_ 1878441472589561856
publishDateSort 2014
author_browse Cortes, Laura
Gil Serna, Jessica
González Jaén, María Teresa
Patiño Álvarez, Aurora Belén
Vázquez Estévez, María Covadonga Inmaculada
publisherStr Elsevier
score 6,924472

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